Fire-cracker.



I. M. BOND.

FIRE GRAUKEB.

APPLIcATIoN FILED SEPT. 3o, 1907.

.7 A la.

Sme/@atroz 1n: Nam'us PETER: co.. vhswmcron, n. c.

No. 901,317.l

ISAAC M. BOND, OF NORTH TAZEWELL, VIRGINIA.

FIRE-CRACIGIR.

' Specicaton of Letters Patent.

Patented Oct. 20, 1908.`

Application filed September 30, 1,997, No. 395,176.

To all whom 'it may concern: Be 1t known that I, IsAAc M. BoND, a citizen of the United States, residing at North Tazewell, 1n the county of Tazewell and State of Virginia, haveV invented certain new f and usefulImprovements in Fire-Crackers;

yand I do declare the following to be a full,

clear, and exact description of the invention,

such as will enableothers skilled in the art to which it appertains to make and use the same.

My invention relates to fireworks and more particularly to that class known as fire crackers.

The object ofmy invention is to provide an article ofthis class which may be more I readily ignited, in which the loss due to un- '1.exploded crackers is avoided, androne which Vtion. ThisV object is Vconstruction shown in will producea louder report upondetonaaccomplished by the the accompanying drawing wherein is shown a side view of a cracker made in accordance with my invention, the size being exaggerated, and a portion being shown 1n section.

By reference to the drawing it will be seen that the crackenl, while retaining its round Vform in cross section is given a taper 2 toward either end. ByV this change 1n form,

I provide a cracker wherein the lines of force at the moment of rexplosion have a tendfency to accumulate within the points, ind-' ing the line of least resistance in a direction at an angle to the axis kof the cracker rather than parallel therewith. Thisy construction *and conditionrpermits me to give greater thickness to the walls 3 at the point of greatl' j'estdiameter,

and to compensatetherefor by gradually decreasing the amount of wall ma- 'terial toward the ends. given the'canal 4 within A similar taper is which is stored the explosive 5. VVSaid canal taking the form'of an `elongated' pocket having its greatest Vdameter midway the ends. of the cracker and contracted at the ends to a diameteridentical with that of the fuse 6.

f My invention contemplates the use of a Y fuse 6 of the same length as the cracker body 'y land of the character D now in use and well known. u fr Y.

Thecracker body being completed, as described, the ends'or tips 7 yare dipped in a `given the cracker body isv such as will prevent its premature ignition by contact with Vlts fellows in storage or shipping, and which will insure it against damage by contact with damp surfaces.- Again,` it will be obvious that weather conditions will have little or no influence upon a crackerV constructed as Vdescribed, since it is always possible to ignite one by frictional contact with'a fellow even in violent storms.

Having thus described my invention, what I claim as new and desire to'secure by Let ters-Patent, is;

l. A firecracker comprising a body having a powder-chamber, a fuse extending therethrough and exposed at both ends, and an ignitible composition carried on each end of the body in touch with the fuse. Y

2. Afirecracker comprising a body, exposed abrasive material on said body, a fuse runningthrough said body and exposed at berth ends, and ignitible material carried by the body in engagement with thcfuse.

3. In a fire-cracker,` an explosive containing cell having an elongated form and decreasing in diameter from its center towards its end, the inclosing wall of said cell varying in thickness from the middle portion of the cracker toward its ends, for the purpose set forth.

4. `A hollow irecracker body, from its center toward its ends, of said body decreasing in thickness in the direction of taper, and a ring` fuse.

tapering In testimony whereof I have hereuntoset my handin presence of two subscribing witnesses.

Y ISAAC M. BOND. Witnesses:

A. B. BUCHANAN, O. F. WALL.

the materiall 

